Measurement of Kinematic and Thermal Characteristics of Fast Gas-Dynamic Processes by Means of Microwave Probing
E. V. Botov1, V. N. Ikonnikov2, V. A. Kanakov2, N. S. Kornev3, K. V. Mineev3, A. V. Nazarov3, A. A. Sedov1, A. A. Shalygin1, E. S. Mitin1
1Institute of Experimental Physics, Russian Federal Nuclear Center, Sarov, 607188 Russia
2Lobachevskii State University of Nizhnii Novgorod, Nizhnii Novgorod, 603098 Russia
3Sedakov All-Russian Scientific Research Institute of Measuring Systems, Nizhnii Novgorod, 603137 Russia
Keywords: радиоинтерферометр, радиометр, КВЧ-диапазон, яркостная температура, активно-пассивный режим, коэффициент отражения, быстропротекающий газодинамический процесс, radio interferometer, radiometer, extremely high-frequency range, brightness temperature, active-passive mode, reflection coefficient, fast gas-dynamic process
Abstract
The paper describes a method of simultaneous measurements of kinematic parameters of a fast process by a microwave radio interferometer with a 3-mm range of wavelengths and the brightness temperature of the same process by the microwave radio interferometer operating in the radiometer mode. The methods of radiometer calibration and analysis of radiometric data are described. Results of experimental investigations are reported by an example of measuring the detonation velocity and estimating the brightness temperature of the detonation front in TNT.
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